Re: pgsql: Add kqueue(2) support to the WaitEventSet API.

Michael Paquier <michael@paquier.xyz>

From: Michael Paquier <michael@paquier.xyz>

To: Thomas Munro <tmunro@postgresql.org>

Cc: pgsql-committers@lists.postgresql.org

Date: 2020-02-20T07:24:35Z

Lists: pgsql-hackers

Hi Thomas,

On Wed, Feb 05, 2020 at 04:59:10AM +0000, Thomas Munro wrote:
> Add kqueue(2) support to the WaitEventSet API.
> 
> Use kevent(2) to wait for events on the BSD family of operating
> systems and macOS.  This is similar to the epoll(2) support added
> for Linux by commit 98a64d0bd.

Worth noting this issue with the test suite of postgres_fdw for
buildfarm animal coypu, running on NetBSD:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=coypu&dt=2020-02-19%2023%3A01%3A01
+ERROR:  kqueue failed: Too many open files
--
Michael

Commits

Don't use EV_CLEAR for kqueue events.
- 9b8aa0929390 13.0 cited
Fix kqueue support under debugger on macOS.
- 7bc84a1f304a 13.0 landed
Account explicitly for long-lived FDs that are allocated outside fd.c.
- 3d475515a15f 13.0 landed
Add kqueue(2) support to the WaitEventSet API.
- 815c2f0972c8 13.0 cited
Introduce WaitEventSet API.
- 98a64d0bd713 9.6.0 cited